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Method, system and base station using frame configuration which supports relay for wireless transmission

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Publication number
US20100189081A1
US20100189081A1 US12668292 US66829208A US20100189081A1 US 20100189081 A1 US20100189081 A1 US 20100189081A1 US 12668292 US12668292 US 12668292 US 66829208 A US66829208 A US 66829208A US 20100189081 A1 US20100189081 A1 US 20100189081A1
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Prior art keywords
relay
zone
data
dl
access
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Granted
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US12668292
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US8265044B2 (en )
Inventor
Guanghui Zhang
Yongbin Xie
Yingmin Wang
Shaohui Sun
Yang Yu
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China Academy of Telecommunications Technology
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Da Tang Mobile Communications Equipment Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603Arrangements for wireless physical layer control
    • H04B7/2606Arrangements for base station coverage control, e.g. by using relays in tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/155Ground-based stations

Abstract

A method using a frame structure which supports relay for wireless transmission, which divides the time slots of a sub-frame into some zones, in which the data is transmitted using the manner of TDD, wherein further including that at least one time slot in a sub-frame is set as a hybrid zone; the transmission of the data is realized through frequency division multiplexing the access link and relay link in the hybrid zone of the sub-frame; and also the multi-hop relay is supported under the two work manners of relay in sub-frame and relay in frame.

Description

  • [0001]
    This application claims the priority to Chinese Patent Application No. 200710118573.4, filed with the Chinese Patent Office on Jul. 9, 2007 and entitled “METHOD FOR WIRELESS TRANSMISSION BY USING FRAME STRUCTURE SUPPORTING RELAY AND SYSTEM THEREOF”, which is hereby incorporated by reference in its entirety.
  • FIELD OF THE INVENTION
  • [0002]
    The present invention relates to the technical field of wireless communication and particularly to a method for wireless transmission by using a frame structure supporting relay, a system and a base station thereof.
  • BACKGROUND OF THE INVENTION
  • [0003]
    In the 3rd Generation (3G) and the Beyond 3rd Generation (B3G) communication systems, the coverage area is an important aspect for a wireless access system, and the wireless access system performs coverage of its service area generally through base stations or access points. However, a mobile station may quite possibly locate outside the service area and can not therefore share the wireless access service due to its mobility. Even if the UE locates in the service area, the signal transmission may be possibly obstructed by obstacles on transmission paths, which reduces the Quality of Service. In addition, very high speed data (e.g., 1 Gbps) shall be transmitted in future mobile communication systems, and it is extremely possible that a high communication frequency (e.g., 5 GHz) is utilized in the future mobile communication systems due to the limitation of frequency band allocation. These two factors may cause a sharp reduction of the coverage area, and the number of base stations/access points may influence construction and operating cost of the network to a large extent.
  • [0004]
    In consideration of the above, the Relay or Relay Station (RS) technology is generally proposed in the future mobile communication technical solution in order to address the seamless coverage of service area and the increasing of system capacity and to save the cost as soon as possible. If a UE locates outside the service area or the quality of signal can not meet the requirements, the signal may be relayed by a RS to implement extension of the service area or improve transmission reliability, i.e., the main function of the Relay is to extend the coverage area and the cell capacity. A basic structure of the Relay may be depicted in FIG. 1. In FIG. 1, if the RS transmits independent synchronization and control information, the RS is called a non-transparent relay, otherwise the RS is called a transparent relay.
  • [0005]
    In the conventional art, in order to keep a strong compatibility with the conventional 3G (mainly the TD-SCDMA), a frame structure of B3G is illustrated in FIG. 2. In addition, in order to keep a strong compatibility with the conventional 3G (mainly the TD-SCDMA), a frame structure of the Long term evolution time division duplex (LTE TDD) is illustrated in FIG. 3. In order to support the relay, a downlink subframe and an uplink subframe are generally divided into Access Zones and Relay Zones respectively in the TDD system, as particularly illustrated in FIG. 4.
  • [0006]
    However, the above TDD system supporting the Relay frame structure has the following apparent disadvantages if it is applied to the B3G technology:
  • [0007]
    (1) Increasing the delay. Taking a BS transmitting downlink traffic as an example: when the downlink traffic arrives at the BS, the BS may transmit the downlink traffic at the beginning time of a downlink subframe in the original system frame structure. However, the BS may transmit the downlink traffic only in the DownLink (DL) Access Zone of the B3G frame structure supporting Relay, which increases the delay virtually and makes it difficult to meet the rigorous requirements for delay in B3G, as particularly illustrated in FIG. 5.
  • [0008]
    (2) Wasting resource. In the case that traffic is little and little bandwidth is required in a relay link, bandwidth in the whole Relay zone shall be allocated to the relay link if the original frame structure supporting Relay is utilized for data transmission, which may cause a severe resource wasting, as particularly illustrated in FIG. 6.
  • SUMMARY OF THE INVENTION
  • [0009]
    In view of this, an embodiment of the present invention provides a method for wireless transmission by using a frame structure supporting Relay, a system and a base station thereof, which utilizes frequency resource and time resource effectively, decreases delay and increases the utilization ratio of resource.
  • [0010]
    Accordingly, the technical solution according to an embodiment of the present invention is described as follows.
  • [0011]
    A method for wireless transmission by using a frame structure supporting Relay, wherein time slots of a subframe is divided into a plurality of zones, and a time division multiplex manner is utilized for data transmission, and the method further includes:
      • setting at least one time slot in the subframe as a hybrid zone; and
      • performing data transmission in a frequency division multiplex manner in the hybrid zone.
  • [0014]
    A system for wireless transmission by using a frame structure supporting Relay, includes a base station, a relay and user equipment, wherein
      • in the downlink direction, the base station transmits data in a specific downlink time slot to the user equipment and the relay respectively in a frequency division multiplex manner;
      • in the uplink direction, the user equipment transmits data to the relay, the relay transmits data in a specific uplink time slot to the base station at a frequency allocated by the base station, and the user equipment transmits data that is frequency division multiplexed in the relay to the base station in the specific uplink time slot.
  • [0017]
    A base station, including: a setting unit, a transmitting unit and a receiving unit, wherein
      • the setting unit is configured to set at least one time slot of a subframe as a hybrid zone;
      • the transmitting unit is configured to transmit data in a hybrid zone of a downlink subframe to user equipment and a relay in a frequency division multiplex manner; and
      • the receiving unit is configured to receive data sent from the relay or data that is frequency division multiplexed by the relay and the user equipment in a hybrid zone of an uplink subframe.
  • [0021]
    It can be seen that with the method, the system and the base station according to embodiments of the present invention, the broad bandwidth of the B3G system is sufficiently utilized. At least one time slot of a subframe is set as a hybrid zone and data transmission is performed via frequency division multiplex of the access link and the relay link in the Hybrid Zone of the subframe, which not only improves flexibility of the system but also sufficiently utilizes time and frequency resource of the system, decreases delay, and supports non-transparent, transparent and multi-hop relay in compatibility with the TD_SCDMA system. Also, such an order can decrease payload of the system sufficiently, increase the utilization ratio of resource, and ensure sufficient time for transmit-to-receive and receive-to-transmit transition for the UE.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0022]
    FIG. 1 is a basic structural diagram of a Relay system in the conventional art;
  • [0023]
    FIG. 2 is a diagram of a B3G frame structure compatible with TD-SCDMA in the conventional art;
  • [0024]
    FIG. 3 is a diagram of a LTE TDD frame structure compatible with TD-SCDMA in the conventional art;
  • [0025]
    FIG. 4 is a diagram of a TDD system frame structure supporting relay in the conventional art;
  • [0026]
    FIG. 5 is a diagram of a TDD system frame structure supporting relay with increased delay in the conventional art;
  • [0027]
    FIG. 6 is a diagram of a TDD system frame structure supporting relay with wasted resource in the conventional art;
  • [0028]
    FIG. 7 is a flow chart of a method according to an embodiment of the present invention;
  • [0029]
    FIG. 8 is a diagram of a TDD frame structure supporting inband non-transparent relay according to an embodiment of the present invention;
  • [0030]
    FIG. 9 is a diagram of a TDD frame structure supporting inband transparent relay according to an embodiment of the present invention;
  • [0031]
    FIG. 10 is a diagram of a frame structure supporting frequency division multiplex of a relay link and an access link with decreased delay according to an embodiment of the present invention;
  • [0032]
    FIG. 11 is a diagram of a frame structure supporting frequency division multiplexing of a relay link and an access link with feasible resource allocation according to an embodiment of the present invention;
  • [0033]
    FIG. 12 is a flow diagram of a signal supporting inband transparent relay according to an embodiment of the present invention;
  • [0034]
    FIG. 13 is a flow diagram of a signal supporting inband non-transparent relay according to an embodiment of the present invention;
  • [0035]
    FIG. 14 is a flow diagram of a signal supporting multi-hop relay in the first approach according to an embodiment of the present invention; and
  • [0036]
    FIG. 15 is a flow diagram of a signal supporting multi-hop relay in the second approach according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0037]
    The basic idea of an embodiment of the present invention lies in that a manner combining time division multiplex and frequency division multiplex in a broadband TDD system, which can implement feasible granularity and flexibility and effectiveness of resource scheduling.
  • [0038]
    In order to make those skilled in the art better understand the technical solution according to embodiments of the present invention, the present invention is described in detail hereinafter with reference to the attached drawings and the embodiments. As illustrated in
  • [0039]
    FIG. 7, a method according to an embodiment of the present invention includes:
  • [0040]
    Step 701: Setting at least one time slot in a subframe as a hybrid zone; and
  • [0041]
    Step 702: Performing data transmission in a frequency division multiplex manner in the hybrid zone.
  • [0042]
    In particular, in the B3G frame structure according to the conventional art, each frame, 10 ms, is divided into two 5 ms subframes, and each subframe includes one DownLink Synchronization timeslot (DL SYNC timeslot) and 14 data time slots. In an embodiment of the present invention, in order to support Relay, the B3G frame structure is divided into different zones for supporting transparent relay and non-transparent relay respectively.
  • [0043]
    For the non-transparent relay as illustrated in FIG. 8, for a Base Station (BS), Hybrid Zones are set in each subframe, i.e., the Hybrid Zones replace the Relay Zones. Therefore, each subframe is composed of a first DownLink (DL) Access Zone, an UpLink (UL) Hybrid Zone, an UpLink (UL) Access Zone, a DownLink (DL) Hybrid Zone, and a second DownLink (DL) Access Zone. The first DL Access Zone is composed of a DL SYNC time slot, TS0 and TS1, and any of other zones is composed of one or more remaining time slots. In the first DL Access Zone, the BS may transmit synchronization information and control information. In the UL Hybrid Zone, the UE and the RS may transmit data to the BS simultaneously in a FDM manner, and in the UL Access Zone, only the UE may transmit data to the BS. In the DL Hybrid Zone, the BS may transmit data to the UE and the RS simultaneously in a FDM manner, and in the second DL Access Zone, the BS may only transmit data to the UE. The BS may also transmit synchronization information and control information in the DL Hybrid Zone to the RS. A GP between the first DL Access Zone and the UL Hybrid Zone is a transit point from downlink to uplink.
  • [0044]
    For a relay, each subframe is composed of a first DL Access Zone, an UpLink (UL)
  • [0045]
    Relay Zone, a UL Access Zone, a DownLink (DL) Relay Zone and a DL Access Zone. The first DL Access Zone is composed of a DL SYNC time slot, TS0 and TS1, and any of other zones is composed of one or more remaining time slots. In the first DL Access Zone, the RS may transmit its own synchronization information and control information. In the UL Relay Zone, the RS forwards data from the UE to the BS, and the UE may transmit data in the UL Access Zone to its home RS. In the DL Relay Zone, the RS may receive data from the BS and forward the data in the second DL Access Zone to the UE. A GP between the first DL Access Zone and the UL Relay Zone is a transit point from downlink to uplink. A transmit/receive transition gap (TTG) exists between the UL Relay Zone and the UL Access Zone, and a receive/transmit transition gap (RTG) exists between the DL Relay Zone and the second DL Access Zone.
  • [0046]
    A frame structure supporting transparent relay is similar to that supporting non-transparent relay, as illustrated in FIG. 9. Hybrid Zones are set in each subframe, i.e., the Hybrid Zones replace the Relay Zones. Therefore, for a BS supporting inband transparent relay, each subframe is composed of a first DL Access Zone, a UL Hybrid Zone, a UL Access Zone, a DL Hybrid Zone and a DL Access Zone. The first DL Access Zone is composed of a DL SYNC time slot, TS0 and TS1, and any of other zones is composed of one or more remaining time slots. In the first DL Access Zone, the BS may transmit synchronization information and control information. In the UL Hybrid Zone, the UE and the RS may transmit data to the BS simultaneously in a Frequency division multiple (FDM) manner, and only the UE may transmit data in the UL Access Zone to the BS. In the DL Hybrid Zone, the BS may transmit data to the UE and the RS simultaneously in a FDM manner, and the BS may only transmit data in a second DL Access Zone to the UE. A GP between the first DL Access Zone and the UL Access Zone is a transit point from downlink to uplink.
  • [0047]
    Also, the second DL Access Zone may be replaced with a downlink transparent zone, so that the inband transparent relay can implement the function of cooperative relay.
  • [0048]
    For an inband transparent relay, each subframe is composed of a first DL Access Zone, a UL Access Zone, a UL Relay Zone, a DL Access Zone and a DL Relay Zone. The first DL Access Zone is composed of a DL SYNC time slot, TS0 and TS1, and any of other zones is composed of one or more remaining time slots. In the first DL Access Zone, the RS receives synchronization information and control information from the BS. In the UL Relay Zone, the RS forwards data from the UE to the BS, and the UE may transmit data in the UL Access Zone to its home RS. In the DL Relay Zone, the RS may receive data from the BS, and forwards the data in a second DL Access Zone to the UE. A flow chart of signal is illustrated in FIG. 12. A GP between the first DL Access Zone and the UL Access Zone is a transit point from downlink to uplink. A RTG exists between the UL Access Zone and the UL Relay Zone, and a TTG exists between the second DL Access Zone and the DL Relay Zone.
  • [0049]
    With the above frame structure, the time division multiplex is utilized between zones, however, the frequency division multiplex is utilized in the UL Hybrid Zone and the DL Hybrid Zone in the relay link and the access link. Also, allocation of frequency domain resource in the relay link and the access link in respective time slots of the Hybrid Zones may be different from each other, which depends on scheduling. In the case that traffic in the relay link is little, i.e., the relay does not need to occupy a large bandwidth, a part of frequency resource from the UL Hybrid Zone or the DL Hybrid Zone may be allocated to the UE, and it is therefore avoided resource wasting caused by allocation of all bandwidth of a time slot to the relay link. Also, the utilization of frequency multiplex improves the flexibility of scheduling system resource. With the above frame structure, a smaller granularity of resource scheduling and a decreased delay can be implemented.
  • [0050]
    Particularly, as illustrated in FIG. 10, taking a BS transmitting downlink traffic as an example: when the downlink traffic arrives at the BS, because the frequency division multiplex is utilized in the relay link and the access link in the Hybrid zones, the BS may transmit data to the UE in Hybrid Zones of a downlink subframe in the system frame structure supporting Hybrid Zone, the transmitting time being equal to that of a frame structure that does not support relay. Therefore, the delay is not increased.
  • [0051]
    Also, as illustrated in FIG. 11, in the case that traffic in the relay link is little and little bandwidth is required, a part of bandwidth of the Hybrid Zones may be allocated to the relay link by using the frame structure supporting frequency division multiplex in the relay link and the access link, thereby decreasing resource wasting.
  • [0052]
    Correspondingly, as illustrated in FIG. 12 and FIG. 13, the operation of the system using the above frame structure is depicted as follows: in the downlink direction, the BS transmits data in the DL Hybrid Zone to the UE and the RS in the coverage area of the BS respectively in a FDM manner, the RS demodulates and decodes the data from the BS upon receiving the data at a corresponding frequency resource, determines a corresponding destination address, encodes and modulates the data in a proper position of the DL Access Zone, and then forwards the data to a corresponding UE; in the uplink direction, the UE transmits data in the UL Access Zone to the RS, the RS demodulates and decodes the data from the BS upon receipt, determines a corresponding destination address, and transmits the data to the BS in the frequency resource allocated by the BS to the RS in the UL Hybrid Zone, and in the UL Hybrid Zone, the UE also transmits data to the BS in a frequency division multiplex manner with the RS. The transparent relay receives synchronization information and control information from the BS in the first DL Access Zone, and the non-transparent relay receives synchronization information and control information from the BS in the DL Relay Zone.
  • [0053]
    In addition, if a system includes a plurality of relays, the RS needs a plurality of Relay Zones operating in a transmitting or receiving mode in order to support multi-hop. An embodiment of the present invention provides two approaches for supporting multi-hop relay: an intra-subframe relay and an intra-frame relay. Each RS may operate in either of the approaches but not necessarily operate in the two approaches simultaneously.
  • [0054]
    Particularly, as illustrated in FIG. 14, the first approach, i.e., the intra-subframe relay, allows the BS or RS to transmit, receive or be idle in the Relay Zone. In the downlink direction, an odd hop RS transmits data in the DL Relay Zone of an even subframe to a next hop RS, and the BS and an even hop RS transmits data in the DL Relay Zone of an odd subframe to a next hop RS. In the uplink direction, an odd hop RS transmits data in the UL Relay Zone of an odd subframe to a back hop RS (or BS), and an even hop RS transmits data in the UL Relay Zone of an even subframe to a back hop RS. For the odd hop RS, a TTG exists between the UL Relay Zone and the UL Access Zone of the odd subframe, and a RTG exists between the DL Relay Zone and the DL Access Zone of the odd subframe. For the even hop RS, a TTG exists between the UL Relay Zone and the UL Access Zone of the even subframe, and a RTG exists between the DL Relay Zone and a second DL Access Zone of the even subframe.
  • [0055]
    Particularly, as illustrated in FIG. 15, the second approach, i.e., the intra-frame relay, allows multi-hop relay in a single subframe. In the uplink direction, an odd hop RS transmits data in the UL Relay Zone 2 to a back hop RS or BS, and an even hop RS transmits data in the UL Relay Zone 1 to a back hop RS. In the downlink direction, an even hop RS (or BS) transmits data in the DL Relay Zone 1 (or the DL Hybrid Zone) to a next hop RS, and an odd hop RS transmits data in the DL Relay Zone 2 to a next hop RS. For the odd hop RS, a RTG exists between the UL Relay Zone 1 and the UL Relay Zone 2 or between the DL Relay Zone 1 and the DL Relay Zone 2, and a TTG exists between the UL Relay Zone 2 and the UL Access Zone. For the even hop RS, a TTG exists between the UL Relay Zone 2 and the UL Access Zone or between the DL Relay Zone 1 and the DL Relay Zone 2. For the even hop RS, a TTG exists between the UL Relay Zone 1 and the UL Relay Zone 2 or between the DL Relay Zone 1 and the DL Relay Zone 2, and a RTG exists between the DL Relay Zone 2 and a second DL Access Zone.
  • [0056]
    Multi-hop can be implemented by the relay in the above two approaches, thereby extends the coverage area of a wireless access system.
  • [0057]
    Hereinafter is described a system for wireless transmission by using a frame structure supporting relay according to an embodiment of the present invention, the system including a base station, a relay and user equipment.
  • [0058]
    For the base station, Hybrid Zones are set in each subframe, i.e., the Hybrid Zones replace the Relay Zones. Therefore, each subframe is composed of a first DL Access Zone, a UL Hybrid Zone, a UL Access Zone, a DL Hybrid Zone, and a second DL Access Zone. For the relay, each subframe is composed of a first DL Access Zone, a UL Relay Zone, a UL Access Zone, a DL Relay Zone, and a DL Access Zone.
  • [0059]
    Particularly, in the downlink direction, the BS performs frequency division multiplex in the relay link and the access link in the DL Hybrid Zone, i.e., the BS allocates a part of bandwidth of the Hybrid zones to the relay link. Therefore, the BS may transmit data in the DL Hybrid Zone to the UE and the RS respectively in the coverage area of the BS in a FDM manner, the RS demodulates and decodes the data from the BS upon receiving the data at a corresponding frequency resource, determines a corresponding destination address, encodes and modulates the data in a proper position of the DL Access Zone, and then forwards the data to a corresponding UE; in the uplink direction, the UE transmits data in the UL Access Zone to the RS, the RS demodulates and decodes the data upon receipt, determines a corresponding destination address, and transmits the data to the BS in the frequency resource allocated by the BS to the RS in the UL Hybrid Zone, and the UE also transmits data in a frequency division multiplex manner to the BS with the RS.
  • [0060]
    In addition, if a system includes a plurality of relays, an embodiment of the present invention provides two approaches supporting multi-hop relay: an intra-subframe relay and an intra-frame relay. Each RS may operate in either of the approaches but not necessarily operate in the two approaches simultaneously.
  • [0061]
    The first approach, i.e., the intra-subframe relay, allows the BS or RS to transmit, receive or be idle in the Relay Zone. In the downlink direction, an odd hop RS transmits data in the DL Relay Zone of an even subframe to a next hop RS, and the BS and an even hop RS transmits data in the DL Relay Zone of an odd subframe to a next hop RS. In the uplink direction, an odd hop RS transmits data in the UL Relay Zone of an odd subframe to a back hop RS (or BS), and an even hop RS transmits data in the UL Relay Zone of an even subframe to a back hop RS.
  • [0062]
    The second approach, i.e., the intra-frame relay, allows multi-hop relay in a single subframe. In the uplink direction, an odd hop RS transmits data in the UL Relay Zone 2 to a back hop RS or BS, and an even hop RS transmits data in the UL Relay Zone 1 to a back hop RS. In the downlink direction, an even hop RS (or BS) transmits data in the DL Relay Zone 1 (or the DL Hybrid Zone) to a next hop RS, and an odd hop RS transmits data in the DL Relay Zone 2 to a next hop RS.
  • [0063]
    It can be seen that in the above system, the broad bandwidth of the B3G system is sufficiently utilized, and frequency division multiplex of the access link and the relay link in the Hybrid Zones is utilized for data transmission, which not only improves flexibility of the system but also sufficiently utilizes time and frequency resource of the system. Also, multi-hop relay can be supported if the system includes a plurality of relays.
  • [0064]
    The above description is merely preferred embodiments of the present invention, which shall not limit the scope of the present invention. Any variations, equivalents and modifications made within the spirit and principle of the present invention shall fall into the scope of the present invention.

Claims (14)

1. A method for wireless transmission by using a frame structure supporting Relay, wherein time slots of a subframe is divided into a plurality of zones, and data transmission is performed in a time division multiplex manner, and the method further comprises:
setting at least one time slot in the subframe as a hybrid zone; and
performing the data transmission in a frequency division multiplex manner in the hybrid zone.
2. The method according to claim 1, wherein in the hybrid zone, the frequency division multiplex manner is utilized in a relay link and an access link.
3. The method according to claim 1, wherein a non-transparent relay receives synchronization information and control information sent from a base station in a downlink relay zone.
4. The method according to claim 1, wherein a transparent relay receives synchronization information and control information sent from a base station in a first downlink access zone.
5. The method according to claim 1, wherein performing the data transmission partially in the following manner:
in the downlink direction, the base station transmits data in the hybrid zone to user equipment and the relay respectively in a frequency division multiplex manner.
6. The method according to any one of claim 1, wherein performing the data transmission partially in the following manner:
in the uplink direction, the relay and user equipment transmits data in the hybrid zone to the base station simultaneously in a frequency division multiplex manner.
7. The method according to claim 1, wherein if a plurality of relays exist, a base station or a relay support multi-hop by transmitting data, receiving data or being idle in a relay zone.
8. The method according to claim 7, wherein the multi-hop relay is supported partially in the following manner:
in the downlink direction, an odd hop relay transmits data in a downlink relay zone of an even subframe to a next hop relay, and the base station and an even hop relay transmits data in a downlink relay zone of an odd subframe to a next hop relay; and
in the uplink direction, an odd hop relay transmits data in an uplink relay zone of an odd subframe to a back hop relay or base station, and an even hop relay transmits data in an uplink relay zone of an even subframe to a back hop relay.
9. The method according to claim 1, wherein a relay supports multi-hop relay by operating in an intra-frame relay approach.
10. The method according to claim 9, wherein the multi-hop relay is supported in the following manner:
in the downlink direction, an even hop relay transmits data in a first downlink relay zone to a next hop relay or a base station transmits data in a downlink hybrid zone to a next hop relay, and an odd hop relay transmits data in a second downlink relay zone to a next hop relay; and
in the uplink direction, an odd hop relay transmits data in a second uplink relay zone to a back hop relay or base station, and an even hop relay transmits data in a first uplink relay zone to a back hop relay.
11. A system for wireless transmission by using a frame structure supporting Relay, comprising a base station, a relay and user equipment, wherein
the base station transmits data in a hybrid zone of a downlink subframe to the user equipment and the relay respectively in a frequency division multiplex manner;
the relay transmits data in a hybrid zone of an uplink subframe to the base station at a frequency allocated by the base station; and
the user equipment transmits data to the base station in a frequency division multiplex manner with the relay in the hybrid zone of the uplink subframe.
12. The system according to claim 11, wherein in the hybrid zone, a relay link and an access link are frequency division multiplexed with each other.
13. The system according to claim 11, wherein the system supports multi-hop relay in the case that the relay operates in an intra-subframe relay approach and in an intra-frame relay approach.
14. A base station, comprising: a setting unit, a transmitting unit and a receiving unit, wherein
the setting unit is configured to set at least one time slot of a subframe as a hybrid zone;
the transmitting unit is configured to transmit data in a hybrid zone of a downlink subframe to user equipment and a relay in a frequency division multiplex manner; and
the receiving unit is configured to receive data sent from the relay or data that is frequency division multiplexed by the relay and the user equipment in a hybrid zone of an uplink subframe.
US12668292 2007-07-09 2008-07-08 Method, system and base station using frame configuration which supports relay for wireless transmission Active 2029-06-09 US8265044B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN200710118573 2007-07-09
CN200710118573.4 2007-07-09
CN 200710118573 CN101345544B (en) 2007-07-09 2007-07-09 Method and system for wireless transmission adopting Relay supported frame structure
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100034135A1 (en) * 2008-08-06 2010-02-11 Lg Electronics Inc. Method and apparatus of communication using subframe between base station and relay
US20110085478A1 (en) * 2008-10-24 2011-04-14 Huawei Technologies Co., Ltd. Relay Transmission Method and Apparatus
US20110182223A1 (en) * 2008-08-11 2011-07-28 Koninklijke Philips Electronics, N.V. Techniques for solving overhearing problems of body area network medium access control protocols
US20110280176A1 (en) * 2009-01-16 2011-11-17 Electronics And Telecommunications Research Institute A device and method for transmitting relay synchronization signal on lte-a system based on orthogonal frequency division having a multi-hop relay
US8265044B2 (en) * 2007-07-09 2012-09-11 China Academy Of Telecommunications Technology Method, system and base station using frame configuration which supports relay for wireless transmission
US20120320819A1 (en) * 2010-02-16 2012-12-20 Lg Electronics Inc. Relay node apparatus for transmitting and receiving signal according to link operation mode in wireless communication system and method thereof
US20130107856A1 (en) * 2008-08-07 2013-05-02 Apple Inc. Wireless System
US20140226541A1 (en) * 2013-02-14 2014-08-14 Research In Motion Limited Design for Small Cell Demodulation Reference Signal and Initial Synchronization
US8934424B2 (en) 2011-09-29 2015-01-13 Sharp Laboratories Of America, Inc. Devices for reconfiguring a subframe allocation
US9036491B2 (en) 2011-08-12 2015-05-19 Sharp Laboratories Of America, Inc. Devices for converting a downlink subframe
US20150171952A1 (en) * 2009-07-27 2015-06-18 Sony Corporation Base station, communication system, mobile terminal, and relay device
US9602251B2 (en) 2012-01-27 2017-03-21 Sharp Kabushiki Kaisha Devices for reconfiguring uplink and downlink allocations in time domain duplexing wireless systems

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616418A (en) * 2008-06-25 2009-12-30 中兴通讯股份有限公司 Resource reusing method
KR101563032B1 (en) * 2008-08-12 2015-10-23 노오텔 네트웍스 리미티드 Enabling downlink transparent relay in a wireless communications network
CN101814944B (en) * 2009-02-25 2015-04-08 电信科学技术研究院 Data transmission method, system and device
CN101841890B (en) * 2009-03-16 2013-12-04 中兴通讯股份有限公司 Processing method, device and system in relay system
CN101931996A (en) * 2009-06-22 2010-12-29 宏达国际电子股份有限公司 Method of handling positioning measurement and related communication device
KR101612558B1 (en) * 2009-08-28 2016-04-15 엘지전자 주식회사 Method for transmitting frames in a wireless communication system including relay station
CN102045761B (en) 2009-10-26 2013-05-22 中国移动通信集团公司 Method and equipment for transmitting data in relay system
CN102137500B (en) * 2010-01-26 2013-10-02 华为技术有限公司 Method, base station and system for data transmission
KR101305585B1 (en) * 2011-12-30 2013-09-09 서울대학교산학협력단 Method for improving satisfaction of various user's requiring QoS in a multi-users downlink relay network
CN104579456A (en) * 2013-10-18 2015-04-29 中国移动通信集团公司 Heterogeneous network communication method and corresponding equipment
US9699802B2 (en) * 2014-01-30 2017-07-04 Intel Corporation User equipment uplink toggling for dual connectivity networks
CN105848281A (en) * 2015-01-30 2016-08-10 财团法人资讯工业策进会 User equipment, device to device user equipment, backhaul device and positioning method thereof

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060285505A1 (en) * 2005-06-18 2006-12-21 Samsung Electronics Co., Ltd. Routing apparatus and method in a multi-hop relay cellular network
US20070072604A1 (en) * 2005-08-17 2007-03-29 Nortel Networks Limited Method and system for a wireless multi-hop relay network
US20070081502A1 (en) * 2005-10-06 2007-04-12 Samsung Electronics Co., Ltd. Apparatus and method for constructing a frame to support multilink in multi-hop relay cellular network
US20070104223A1 (en) * 2005-11-04 2007-05-10 Samsung Electronics Co., Ltd. Apparatus and method for supporting multiple links by grouping multiple hops in a multi-hop relay cellular network
US7826541B2 (en) * 2004-02-19 2010-11-02 Ntt Docomo, Inc. Wireless relay system, wireless relay apparatus, and wireless relay method
US7920826B2 (en) * 2006-11-10 2011-04-05 Electronics And Telecommunications Research Institute Method of forming frame in multi-hop relay system and system for implementing the method
US7970347B2 (en) * 2006-08-18 2011-06-28 Fujitsu Limited Communication systems
US7986645B2 (en) * 2008-09-02 2011-07-26 Samsung Electronics Co., Ltd. Apparatus and method for frame generation for a full duplex relay
US7990906B2 (en) * 2006-11-03 2011-08-02 Fujitsu Semiconductor Limited Frame structure for a relay station operating in mobile networks
US8005051B2 (en) * 2006-08-31 2011-08-23 Fujitsu Limited Re-transmission control method and relay station apparatus in a relay communication system
US8014338B2 (en) * 2006-04-19 2011-09-06 Samsung Electronics Co., Ltd. Apparatus and method for supporting relay service in a multi-hop relay broadband wireless access communication system
US8031604B2 (en) * 2006-10-25 2011-10-04 Sydir Jaroslaw J Algorithm for grouping stations for transmission in a multi-phase frame structure to support multi-hop wireless broadband access communications
US8040826B2 (en) * 2006-03-03 2011-10-18 Samsung Electronics Co., Ltd Apparatus and method for supporting relay service in a multi-hop relay broadband wireless access communication system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100469168C (en) 2002-12-19 2009-03-11 艾利森电话股份有限公司 Assinging time slots during transmission gaps of a first protocol communication to a second protocol communication
CN1960209A (en) * 2005-10-31 2007-05-09 上海原动力通信科技有限公司 Communication method and device under mode of frequency division duplexing
CN1960207A (en) 2005-11-01 2007-05-09 华为技术有限公司 Radio transfer communication system and method based on admixture of FDD and TDD
KR20070048575A (en) 2005-11-04 2007-05-09 삼성전자주식회사 Apparatus and method for supporting multi-link using of group of multi-hop in multi-hop relay cellular network with using two frequency band
CN101345544B (en) * 2007-07-09 2012-10-10 电信科学技术研究院 Method and system for wireless transmission adopting Relay supported frame structure

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7826541B2 (en) * 2004-02-19 2010-11-02 Ntt Docomo, Inc. Wireless relay system, wireless relay apparatus, and wireless relay method
US20060285505A1 (en) * 2005-06-18 2006-12-21 Samsung Electronics Co., Ltd. Routing apparatus and method in a multi-hop relay cellular network
US20070072604A1 (en) * 2005-08-17 2007-03-29 Nortel Networks Limited Method and system for a wireless multi-hop relay network
US20070081502A1 (en) * 2005-10-06 2007-04-12 Samsung Electronics Co., Ltd. Apparatus and method for constructing a frame to support multilink in multi-hop relay cellular network
US20070104223A1 (en) * 2005-11-04 2007-05-10 Samsung Electronics Co., Ltd. Apparatus and method for supporting multiple links by grouping multiple hops in a multi-hop relay cellular network
US8040826B2 (en) * 2006-03-03 2011-10-18 Samsung Electronics Co., Ltd Apparatus and method for supporting relay service in a multi-hop relay broadband wireless access communication system
US8014338B2 (en) * 2006-04-19 2011-09-06 Samsung Electronics Co., Ltd. Apparatus and method for supporting relay service in a multi-hop relay broadband wireless access communication system
US7970347B2 (en) * 2006-08-18 2011-06-28 Fujitsu Limited Communication systems
US8005051B2 (en) * 2006-08-31 2011-08-23 Fujitsu Limited Re-transmission control method and relay station apparatus in a relay communication system
US8031604B2 (en) * 2006-10-25 2011-10-04 Sydir Jaroslaw J Algorithm for grouping stations for transmission in a multi-phase frame structure to support multi-hop wireless broadband access communications
US7990906B2 (en) * 2006-11-03 2011-08-02 Fujitsu Semiconductor Limited Frame structure for a relay station operating in mobile networks
US7920826B2 (en) * 2006-11-10 2011-04-05 Electronics And Telecommunications Research Institute Method of forming frame in multi-hop relay system and system for implementing the method
US7986645B2 (en) * 2008-09-02 2011-07-26 Samsung Electronics Co., Ltd. Apparatus and method for frame generation for a full duplex relay

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8265044B2 (en) * 2007-07-09 2012-09-11 China Academy Of Telecommunications Technology Method, system and base station using frame configuration which supports relay for wireless transmission
US9148217B2 (en) * 2008-08-06 2015-09-29 Lg Electronics Inc. Method and apparatus of communication using subframe between base station and relay
US20100034135A1 (en) * 2008-08-06 2010-02-11 Lg Electronics Inc. Method and apparatus of communication using subframe between base station and relay
US8948124B2 (en) * 2008-08-07 2015-02-03 Apple Inc. Wireless system
US20130107856A1 (en) * 2008-08-07 2013-05-02 Apple Inc. Wireless System
US9713141B2 (en) 2008-08-07 2017-07-18 Apple Inc. Frame structure for allocating radio resources in a cellular wireless network
US20110182223A1 (en) * 2008-08-11 2011-07-28 Koninklijke Philips Electronics, N.V. Techniques for solving overhearing problems of body area network medium access control protocols
US7953051B1 (en) * 2008-10-24 2011-05-31 Huawei Technologies Co., Ltd. Relay transmission method and apparatus
US9203501B2 (en) * 2008-10-24 2015-12-01 Huawei Technologies Co., Ltd. Relay transmission method and apparatus
US20110085478A1 (en) * 2008-10-24 2011-04-14 Huawei Technologies Co., Ltd. Relay Transmission Method and Apparatus
US7961688B2 (en) * 2008-10-24 2011-06-14 Huawei Technologies Co., Ltd. Relay transmission method and apparatus
US8619724B2 (en) * 2008-10-24 2013-12-31 Huawei Technologies Co., Ltd. Relay transmission method and apparatus
US7953050B2 (en) * 2008-10-24 2011-05-31 Huawei Technologies Co., Ltd. Relay transmission method and apparatus
US20110216675A1 (en) * 2008-10-24 2011-09-08 Huawei Technologies Co., Ltd. Relay Transmission Method and Apparatus
US20140078943A1 (en) * 2008-10-24 2014-03-20 Huawei Technologies Co., Ltd. Relay Transmission Method and Apparatus
US20110280176A1 (en) * 2009-01-16 2011-11-17 Electronics And Telecommunications Research Institute A device and method for transmitting relay synchronization signal on lte-a system based on orthogonal frequency division having a multi-hop relay
US20150171952A1 (en) * 2009-07-27 2015-06-18 Sony Corporation Base station, communication system, mobile terminal, and relay device
US9281889B2 (en) * 2010-02-16 2016-03-08 Lg Electronics Inc. Relay node apparatus for transmitting and receiving signal according to link operation mode in wireless communication system and method thereof
US20120320819A1 (en) * 2010-02-16 2012-12-20 Lg Electronics Inc. Relay node apparatus for transmitting and receiving signal according to link operation mode in wireless communication system and method thereof
US9036491B2 (en) 2011-08-12 2015-05-19 Sharp Laboratories Of America, Inc. Devices for converting a downlink subframe
US8934424B2 (en) 2011-09-29 2015-01-13 Sharp Laboratories Of America, Inc. Devices for reconfiguring a subframe allocation
US9602251B2 (en) 2012-01-27 2017-03-21 Sharp Kabushiki Kaisha Devices for reconfiguring uplink and downlink allocations in time domain duplexing wireless systems
US20140226541A1 (en) * 2013-02-14 2014-08-14 Research In Motion Limited Design for Small Cell Demodulation Reference Signal and Initial Synchronization
US9521637B2 (en) * 2013-02-14 2016-12-13 Blackberry Limited Small cell demodulation reference signal and initial synchronization

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